Omplete the following program: [0.5 X 4 = 2] REM To print message “Health is wealth”
A$ = …………….
…….. = “is wealth”
PRINT ………; “ ; …………..

Asolid steel sphere (k=63.9 w m-1 k-1 , ? =7832 kg m-3 , c=0.523 kj kg-1 k-1 ), 100 mm in diameter is initially at a uniform temperature of 500o c and is suddenly quenched in a large oil bath for which t? = 100o c and h = 3200 w m-2 k-1. estimate the time required for the sphere to cool to 200o c and to 110o c